CN113039068A - 便于视觉检查的防水传声片材 - Google Patents

便于视觉检查的防水传声片材 Download PDF

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CN113039068A
CN113039068A CN201980075880.XA CN201980075880A CN113039068A CN 113039068 A CN113039068 A CN 113039068A CN 201980075880 A CN201980075880 A CN 201980075880A CN 113039068 A CN113039068 A CN 113039068A
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waterproof
visual inspection
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CN113039068B (zh
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徐寅踊
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Amogreentech Co Ltd
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Abstract

本发明公开了一种便于视觉检查的防水传声片材，通过辐射在混合了染料的状态下的聚合物材料以形成具有无彩色的防水层，从而便于视觉检查，并且即使在使防水传声片材薄且轻的同时也能够提高防水性。所公开的便于视觉检查的防水传声片材包括夹设于上部防水层和下部防水层之间的声学层，所述上部防水层和所述下部防水层中的至少一个由具有颜色的多孔有色膜制成。

Description

便于视觉检查的防水传声片材
技术领域
本发明涉及一种防水传声片材，更具体地，涉及一种便于对由于异物和褶皱引起的读取缺陷(reading defects)进行视觉检查的防水传声片材。
背景技术
近年来，已经越来越多地使用移动电子设备，诸如便携式终端、数码相机或笔记本电脑。由于这样的移动电子设备是携带式使用的，有落入水中的风险，因此，需要具备防水功能。也就是说，用于发出声音的声孔形成在安装有扬声器、麦克风等的部分上，并且水或灰尘通过该声孔渗透到电子设备中。
因此，声孔设置有防水传声片材，用于使声音穿过但阻挡水或灰尘。制造这种防水传声片材应该考虑到防水性能和传声效率。
在制造防水传声片材后，应该通过视觉检查来读取产品的缺陷，例如是否存在针孔、灰尘等异物，以及是否存在褶皱，其中，防水传声片材主要以白色制造，从而存在难以通过视觉检查来读取异物和褶皱的问题。
发明内容
【技术问题】
本公开旨在解决上述的传统问题，并且本公开的目的是提供一种便于视觉检查的防水传声片材，通过辐射(radiate)处于混合状态的聚合物材料和颜料，以形成具有颜色的防水层，从而便于视觉检查，并且即使在使防水传声片材薄且轻的同时也能够提高防水性。
【技术方案】
为了实现上述目的，根据本公开的示例性实施方式的便于视觉检查的防水传声片材包括：上部防水层，由多孔膜制成；下部防水层，由所述多孔膜制成，并且设置在所述上部防水层的下方；和声学层，由所述多孔膜制成，并且夹设于所述上部防水层和所述下部防水层之间；其中，所述上部防水层和所述下部防水层中的至少一个的所述多孔膜是具有除白色和黑色以外的颜色的多孔有色膜。
此时，所述多孔有色膜可以为除白色和黑色以外的无彩色，例如为灰色。
所述多孔有色膜可以通过对颜料和聚合物材料的混合物进行静电纺丝而形成，并且所述颜料的颜色可以为黑色和白色中的一种。基于所述混合物，添加所述颜料的比例为大于或等于0.5wt％且小于或等于5wt％。所述聚合物材料可为聚偏氟乙烯(PVDF)和聚氨酯(PU)中的一种，并且所述聚合物材料的颜色可以为白色。
所述多孔有色膜可以具有涂覆在纤维表面上的涂层材料。
所述上部防水层和所述下部防水层可以是具有比所述声学层的纤维结构具有更少曲线的纤维结构的直线形多孔有色膜。
所述声学层的多孔膜可以是通过对与有色颜料混合的聚合物材料进行静电纺丝而形成的有颜色的多孔有色膜，或通过对与黑色颜料混合的聚合物材料进行静电纺丝而形成的无彩色多孔有色膜。此时，所述声学层可以是具有弹簧形纤维结构的多孔膜，所述弹簧形纤维结构具有比所述上部防水层和所述下部防水层的纤维结构更多的曲线。
【有益效果】
根据本公开，便于视觉检查的防水传声片材可夹设于除白色和黑色以外的有色防水层之间而形成声学层，从而便于视觉检查，并且即使在使防水传声片材薄且轻的同时，也能够提高防水性。
此外，便于视觉检查的防水传声片材可以不同地静电纺丝防水层和声学层的物理结构(即，纤维结构)，从而提高防水性能和声学性能。
此外，便于视觉检查的防水传声片材可以混合并辐射在包括颜料的状态下的聚合物材料，从而在实现除白色和黑色以外的颜色且不增加重量的同时，提高防水性能。
附图说明
图1至图3是用于说明根据本公开的示例性实施方式的便于视觉检查的防水传声片材的图。
图4是用于说明根据本公开的示例性实施方式的便于视觉检查的防水传声片材的防水层的图。
图5是用于说明根据本公开的示例性实施方式的便于视觉检查的防水传声片材的声学层的图。
图6是示出根据本公开的示例性实施方式的便于视觉检查的防水传声片材和传统的防水传声片材的接触角的测试结果的图。
图7是示出根据本公开的示例性实施方式的便于视觉检查的防水传声片材和传统的防水传声片材的防水性的测试结果的图。
具体实施方式
以下，将参考附图描述本公开的最优选示例性实施方式，以便具体地描述示例性实施方式，使得本公开所属领域的技术人员可以容易地实践本公开的技术精神。首先，在对每幅附图中的部件添加附图标记时，应当注意，相同的部件尽可能具有相同的附图标记，即使它们在不同的附图中示出。另外，在描述本公开时，相关的、已知的构型或功能的详细描述在确定会使本公开的主题模糊不清时将被省略。
通常，防水传声片材以白色形成，从而在视觉检查时，由于异物或褶皱降低了读取性能。如果防水传声片材以黑色形成，则边缘检查时的读取性能会降低。
因此，根据本公开的示例性实施方式的防水传声片材被形成为具有除白色和黑色以外的颜色，以便于视觉检查和边缘检查两者。此时，防水传声片材可以形成为除白色和黑色以外的无彩色，例如，形成为灰色。
为此，参考图1和图2，防水传声片材100被配置为包括上部防水层110，设置在上部防水层110下方的下部防水层120，以及夹设于上部防水层110和下部防水层120之间的声学层130。
此时，传统的防水传声片材具有由非多孔材料制成的防水层，而根据本公开的示例性实施方式的防水传声片材100具有由多孔材料制成的防水层(上部防水层110和下部防水层120)，并且整体形成有孔隙。
这里，为了便于描述，图1和图2示出了上部防水层110、下部防水层120和声学层130具有相同的厚度，但它们的厚度不限于此，并且根据所需的防水性能和声学性能，每层可以形成不同的厚度。
此外，为了便于描述，图1和图2示出并描述了上部防水层110、下部防水层120和声学层130被清楚地分离，但是如图3所示，在实际产品中，可能难以清楚地分离上部防水层110、下部防水层120和声学层130。
上部防水层110和下部防水层120由多孔有色膜制成。即，上部防水层110和下部防水层120由具有除白色和黑色以外的颜色的多孔有色膜制成。这里，所述颜色包括彩色和无彩色。
多孔有色膜通过对聚合物材料进行静电纺丝以形成白色多孔膜，然后用混合有有色颜料和粘合剂的涂层材料对白色多孔膜进行涂覆来实现颜色。然而，如果用混合有颜料和粘合剂的涂层材料对白色多孔膜进行涂覆，则难以均匀地涂覆涂层材料，从而降低防水性能和颜色实施率，并且颜料是在涂覆过程中添加的，从而增加了膜的重量。
因此，上部防水层110和下部防水层120由通过混合颜料和聚合物材料，然后对颜料和聚合物材料进行静电纺丝而形成的多孔有色膜制成。
通过对以设定比例混合的聚合物材料和颜料的混合物进行静电纺丝而形成多孔有色膜。此时，作为示例，基于混合物，将颜料添加到混合物中的比例约为大于或等于0.5wt％且小于或等于5wt％，并且最佳比例约为2wt％。
多孔有色膜可具有在其一个表面上形成的防水层。通过在多孔有色膜的一个表面上喷涂硅类涂层材料来形成防水层。此时，通过仅在构成多孔有色膜的纤维的表面上涂覆涂层材料的方法而不是表面涂覆方法来形成防水层。因此，多孔有色膜可以具有一些较小的孔，但保持孔隙率。
参考图4，上部防水层110和下部防水层120由具有拉伸的直线形纤维结构的多孔有色膜制成。此时，上部防水层110和下部防水层120由具有包含在纤维内的颜料的多孔有色膜制成。这里，直线形还包括具有相对较少的曲线的形状，这与一般词典的含义不同。
声学层130由形成有多个孔的多孔膜制成。声学层130由通过对聚合物材料进行静电纺丝而形成的多孔膜制成。此时，声学层130由形成有用于传声的多个孔的多孔膜制成，并且由未涂覆有颜料和粘合剂的混合物的白色多孔膜制成。
参考图5，为了实现声学性能，声学层130由不包括颜料的多孔膜制成。声学层130由具有波状弹簧形的纤维结构的多孔膜制成。这里，与上部防水层110和下部防水层120的纤维结构相比，声学层130的纤维结构形成有相对更多的曲线，从而提高弹性恢复力。因此，声学层130可以形成为具有比上部防水层110和下部防水层120的弹性模量(弹性恢复力)更高的弹性模量，从而提高防水传声片材100的声学性能。
当然，声学层130也可以由多孔有色膜制成，该多孔有色膜是通过对以设定比例混合的聚合物材料和颜料的混合物进行静电纺丝而形成的。此时，作为示例，声学层130由通过对混合有白色颜料的聚合物材料进行静电纺丝而形成的多孔有色膜制成。
这里，作为用于制造多孔膜的聚合物材料，可使用：芳香族聚酯，例如，聚酰胺、聚酰亚胺、聚酰胺酰亚胺、聚(间亚苯基异酞酰胺)、聚砜、聚醚酮、聚醚酰亚胺、聚对苯二甲酸乙二醇酯、聚对苯二甲酸丙二醇酯，或聚萘二甲酸乙二醇酯；聚磷腈，例如，聚四氟乙烯、聚二苯氧基磷腈、聚{双[2-(2-甲氧基乙氧基)磷腈]}；含有聚氨酯和聚醚聚氨酯的聚氨酯共聚物；醋酸纤维素；醋酸丁酸纤维素；醋酸丙酸纤维素等。此外，聚合物材料还可以由以下物质形成：聚偏氟乙烯(PVDF)、聚(偏氟乙烯-共-六氟丙烯)、全氟聚合物、聚氯乙烯或聚偏氯乙烯及其共聚物、含有聚乙二醇二烷基醚和聚乙二醇二烷基酯的聚乙二醇衍生物、含有聚(氧化亚甲基-低聚-氧化亚乙基)的聚氧化物、聚环氧乙烷和聚环氧丙烷、聚醋酸乙烯酯、聚(乙烯基吡咯烷酮-醋酸乙烯酯)、聚苯乙烯和聚苯乙烯-丙烯腈共聚物、聚丙烯腈、含有聚丙烯腈-甲基丙烯酸甲酯共聚物的聚丙烯腈共聚物、聚甲基丙烯酸甲酯、聚甲基丙烯酸甲酯共聚物，以及它们的混合物。
参考图6，可以看出，根据本公开的示例性实施方式的防水传声片材100形成有约为138度的接触角，而传统的防水传声片材形成有约为133度的接触角。
参考图7，可以看出，根据本公开的示例性实施方式的防水传声片材100在耐水压约为0.67巴时发生水滴渗漏，而传统的防水传声片材在耐水压约为0.6巴时发生水滴渗漏。
如上所述，可以看出，根据本公开的示例性实施方式的防水传声片材100混合并辐射在包括颜料的状态下的聚合物材料，以将具有与防水层的物理结构(即，纤维结构)不同的物理结构的声学层夹设于有颜色的上部防水层110和下部防水层120之间，从而与传统的防水传声片材相比，在接触角试验和防水试验中具有改进的防水性能。
尽管本公开的优选示例性实施方式已在上文中描述，但应当理解，本公开可以以各种形式修改，并且本领域技术人员可以在不脱离本公开的权利要求书的范围的情况下实践各种修改的示例和改变的示例。

Claims (11)

1.一种便于视觉检查的防水传声片材，包括：
上部防水层，由多孔膜制成；
下部防水层，由所述多孔膜制成，并且设置在所述上部防水层的下方；和
声学层，由所述多孔膜制成，并且夹设于所述上部防水层和所述下部防水层之间；
其中，所述上部防水层和所述下部防水层中的至少一个的所述多孔膜是具有除白色和黑色以外的颜色的多孔有色膜。
2.根据权利要求1所述的便于视觉检查的防水传声片材，其中，所述多孔有色膜具有除白色和黑色以外的无彩色。
3.根据权利要求1所述的便于视觉检查的防水传声片材，其中，所述多孔有色膜为灰色。
4.根据权利要求1所述的便于视觉检查的防水传声片材，其中，所述多孔有色膜通过对颜料和聚合物材料的混合物进行静电纺丝而形成，并且所述颜料的颜色为黑色和白色中的一种。
5.根据权利要求4所述的便于视觉检查的防水传声片材，其中，基于所述混合物，添加所述颜料的比例为大于或等于0.5wt％且小于或等于5wt％。
6.根据权利要求4所述的便于视觉检查的防水传声片材，其中，所述聚合物材料为聚偏氟乙烯(PVDF)和聚氨酯(PU)中的一种，并且所述聚合物材料的颜色为白色。
7.根据权利要求1所述的便于视觉检查的防水传声片材，其中，所述多孔有色膜具有涂覆在纤维表面上的涂层材料。
8.根据权利要求1所述的便于视觉检查的防水传声片材，其中，所述上部防水层和所述下部防水层是具有比所述声学层的纤维结构具有更少曲线的纤维结构的直线形多孔有色膜。
9.根据权利要求1所述的便于视觉检查的防水传声片材，其中，所述声学层的多孔膜是通过对与有色颜料混合的聚合物材料进行静电纺丝而形成的有颜色的多孔有色膜。
10.根据权利要求1所述的便于视觉检查的防水传声片材，其中，所述声学层的多孔膜是通过对与黑色颜料混合的聚合物材料进行静电纺丝而形成的无彩色多孔有色膜。
11.根据权利要求1所述的便于视觉检查的防水传声片材，其中，所述声学层为具有弹簧形纤维结构的多孔膜，所述弹簧形纤维结构具有比所述上部防水层和所述下部防水层的纤维结构更多的曲线。
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